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Gittinsite : CaZr[Si2O7], Vlasovite : Na2ZrSi4O11, Eudialyte : Na15Ca6(Fe2+,Mn2+)3Zr3[Si25O73](O,OH,H2O)3(OH,Cl)2 |
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Kipawa alkaline complex, Les Lacs-du-Témiscamingue, Témiscamingue RCM, Abitibi-Témiscamingue, Québec, Canada
White Gittinsite rimming a 3 cm yellow Vlasovite embedded in Eudialyte from the type locality at the Kipawa alkaline complex, Quebec, Canada. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 52957 View Count: 633 |
 Gittinsite : CaZr[Si2O7], Unnamed (HBU UK-3) : (Na,Ca,K)3(Sr,Ba)3(Zr,Fe,Mn)4Si12O36(OH) · nH2O, Unnamed (HBU UK-5) : (Na,REE,Ca)2-x(Nb,Ti,Ta)2O7(F,OH) where Na>REE+Ca and 0< x <0.3 |
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Khaldzan Buragtag massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia
SEM image of grey in BSE sections of short-prismatic Gittinsite crystals embeded into unnamed Na-Sr-Zr silicate (HBU UK-3). Apparently this is the first evidence of existence of primary gittinsite on the massif. Usually gittinsite is abundant here in quartz assemblages inside of deep decomposed elpidite grains. Zirconosilicates are accompanied by ... |
| © Pavel M. Kartashov | Photo ID: 253057 View Count: 28 |
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Khaldzan Buragtag massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia
11.5x7x3.5 cm fragment of outer, pegmatoid zone of the pegmatite #3. Light-brown finegrained material is pseudomorphoses after completely decomposed calcian Elpidite. These PS composed by quartz impregnated by microcrystals of Zircon and Gittinsite and late formed deep violet Fluorite. Other minerals on the picture are: white primary Quartz, ... |
| © Pavel M. Kartashov | Photo ID: 253090 View Count: 28 |
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Khaldzan Buragtag massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia
Fragment of outer pegmatoid zone of pegmatite #3. Light-brown finegrained material is pseudomorphoses after completely decomposed calcian Elpidite. These PS composed by quartz (SiO2 content of elpidite is 60.11 mas.%) impregnated by crystals of Zircon and Gittinsite. Content of Ca in elpidite determine quontity of new formed gittinsite. ... |
| © Pavel M. Kartashov | Photo ID: 253089 View Count: 22 |
